Pipe or gutter forming machine



(Ramadan E. G. WATROUS 81; H. A. RILEY.

PIPE 0R GUTTEB. FORMING MACHINE.

No. 494,936. PatentedApr. 4, 1893".

m 1 a 1 F INYEN'IURE:

EARL E: WAIRUUE,

rm: mam; PETERS c0. Paoroumc. WASHIh UNITED STATES PATENT OFFICEQ EAR-L G. WATROUS AND HUGH A. RILEY, OF HOOSICK FALLS, NEW-YORK.

PIPE OR GUTTER FORMING MACHINE.

' SPECIFICATION forming part of Letters Patent No. 494,936, dated April 4, 1893.

Application filed December 11, 1891- Serial No. 414,674. (No model.)

To all whom it may concern.-

Be it known that we, EARL G. WVATROUS and HUGH A. RILEY, of the village of Hoosick Falls, in the county of Rensselaer and State of New York, have invented certain new and useful Improvements in Pipe or Gutter Forming Machines; and we hereby declare that the following description, in connection with the accompanying drawings, constitutes a full, clear, and accurate specification thereof and of the best way of constructing and operating the same.

This invention is designed to facilitate the manufacture of pipes and gutters or eavestrough from sheet metal by rolling and bending, and is fully elucidated in the drawings wherein Figure l is a plan of out-improved machine. Fig. 2 is a front elevation and Fig. 3 a rear end elevation of the same. Figs. 4, 5 and 6 are diagrams of the successive positions of the rolls as they appear in'the process of turning the clinches and bending apiece of sheet metal for a section of conductor pipe. Figs. '7, 8 and 9 are similar diagrams showing positions of the rolls in the process of forming a section of ordinary gutter. Fig. 10 is a transverse section of the rod around which the gutter bead is turned. Fig. 11 is a transverse section through a part of one of the rolls and the bar used in connection therewith for bending the clinches for pipe seams.

The characteristic features of this invention lie in the combination of two or more rolls provided with longitudinal grooves and bars to be used in connection therewith which bars are also fitted with grooves for the reception of the edges of the sheet metal to be wrought, by the rotary manipulation of which the clinches of sheet metal pipe and the beads of gutters may be formed, and by the rotation of the rolls themselvesthe tubular part of the pipe or the semi-tubular or channel part of the gutter may similarly be formed. The rolls may be of the same or of different sizes but preferably they are made of different sizes and the bead and clinch forming rods and bars and the cranks for operating the rolls are made to fit either roll so that they are interchangeable, thus adapting the same pair of rolls to make two or more sizes of pipe and two or more sizes of gutter.

In the construction illustrated two rolls C and D of different diameters are shown mounted in hearings in the brackets B B which are attached to a suitable base A. Each is provided with a longitudinal groove T or K extending throughout its entire length and the shafts of the two are geared together by the gears H and G. The gears G and H may mesh directly with each other as shown, or they may be geared together by means of a train of two intermediates so as to preserve their proper relative motions, it not being an essential feature that gears G and H should intermesh. The gear G is held on its shaft by the pin Q which passes through the hub and shaft. The hub is bored with an extra hole d to facilitate change in the relative positions of the two rolls to each other in the conversion of the machine from a pipe former to a gutter former or vice versa. The rolls are revolved by means of a detachable crank L which is fitted to the journaled end of either of the two rolls as shown. To the crank L is pivoted the locking handle M at a: which is fitted with the locking pin or projection P at its inner end and has its outer end normally thrown out by means of a spring 0 resting in the spring socket y of the outer end of the crank L. When the crank is attached to either roll and the crank is turned to its proper position this locking pin will strike one or the other of the pin sockets c or w as the case may be. The crank is perforated with two holes a and b and the rolls are also each provided with an arm bored at its extremity with a hole to correspond with the holes a and I). These arms are shown at R and S and when the crank is attached to one of the rolls it is adjusted so that one of the holes a or b shall be in axial coincidence with one or the other of the holes in the arms R or S. These holes constitute bearings for the reception of the gutter bead forming mandrel E which is shown in position in Fig. 1. .This mandrel is fitted with a crank N by which it is turned. It is provided with one or more longitudinal grooves c and f Fig. 10, in which the edge of the sheet metal is inserted preparatory to the forming of a bead. Two are here provided so that the mandrel can be worked in opposite directions. The working position of the mandrel is determined by ad justing the gearsG andH so that theaxes of the mandrel bearingin oneroll and the groove of the other roll shall coincide. That is to say the rolls should be turned 'until the hole in armRand the groove or mandrel seat 1K shall come opposite each other. When in this position gear G'is pinned in its proper position and the crank is attached to the journal of roll Oif it is desired to use that roll in the formation of a gutter, but'if the other roll is tobe put in operation, then a similar. adjustment is made with'reference to roll D. e I

For making pipe the mandrel is dispensed with and theclinch-bar Fis employed. I This is simply a straight bar fitted to the grooves .K and T and adapted to be fastened therein byscrews z .2. It is fitted with the groove g- Fig. ll for the reception of theedge of the: metal and by changing it end for end'the roll with which itis used may beworked in either direction. In use the opening of the. groove 9' should be toward the opposite roll;

when the roll to which it is appliedis turned so as to bring the bar Ftothe'upper side.

I To adjust themachinefor bending pipe the} linching bar F is secured in. the groove of; that rollabout which. it isdesired to bend the plate. Then the gears are so, adjusted that when the blankis rolled up the groove of one; I

roll will come around at the finish opposite? the clinch bar of the other as in Fig. 6. The

head mandrel E islaid aside- I To bend thei blank the rolls arerevolved to the position} [if the smaller roll is used asa former] shown in Fig. 4.. Then oneedge of the plate h is in-K serted in the clinch groove g of the clinchbari as shown. The rollO is nextrevolved .in the; direction of the arrow around into the position seen in Fig. 5. This bends the clinch on one end E of the plate; then the rolls are reversed andi backed to the first position, the blank reversed, and its opposite end inserted in groove g and; the rolls revolved as in the bending of the first clinch. This brings the blank into theposi-j tion and form seen in Fig. 5. Then by con-.j tinuous rotation in the direction indicated by; the arrow in Fig. 6 the blank is bent to the; form shown, the plate being wrapped around, the roll, the first formed clinch falling into;

the groove in the opposite rollas shown at Ki Fig. 6. As the groove K passes the bar F the; resilience of the metal causes the free end of; the plate to spring out from the gap when,byreversing the rolls sufficiently to carry the; last formed clinch. out of engagement between the rolls, the blank may be removed and the seam closed and finished in the usual,

way. This mode of adjustment and use ap-i plies to both rolls. 5

To convert the machine to a gutter former the bar F is fixed in the groove of that rolll upon or about which it is proposed to bendi the plate to form the gutter. This is for thei purpose of filling the groove so as to present; a fair cylindrical surface. Then the gears are adjusted so as to bring the mandrel bearings of the roll'upon which the plate is to be bent, intoiapposition with' the groove of the roll when they are turned to the position seen in Fig. 8. The crank is then attached to the intended formingroll so that one of the holes a or b, will coincide with the mandrel hearing at the opposite end of theroll. The 1 crank isthen turned until the two rolls are brought intosuch position that the mandrel bearings of one roll stand opposite the. ends of thernandrel seat or groove'of the other roll.

When so adjusted it will be found that the locking pin ,P'will coincide with the socket in the end of the other roll than the one to which the crank is attached By'depressing handle Mthe'pin P can be sprung or snapped into position in the end of the --journal .and thus holds the rolls secure'from disarrangement. The'mand'relEisnextinsertedthrough the hole in the crank and shoved into its-position in the groove in the roll. The parts :arethen in the position seen in Fig.7; "To form the gutter a sheet is is inserted as shown in groove f Fig.7 and the mandrel until the parts assumet-he position'shown in Fig. 8. This motion forms the bead. Then the crank .L is unlocked by depressingthe handle M and theroll'O turned in the direction'of the arrowasin Fig. Quntilthe plate crank N turned in the'direction" of the arrow has passed out from between therolls, when the mandrel E'is withdrawn and the com- .pleted guttersection released. By a simple transposition of .parts the other roll may be used in the same way as the former.

In bending pipe thelclinch bar Fissu'sedto I fill the groovexof the forming roll so as to make its surface practically continuous.

We therefore claimas our in vention- 1. A roll provided with a hearing at each end for the reception of a-rotary'bead fornr ing mandrel, provided with a' groove for the reception of one edge of asheet metal blank,

and a crank or equivalent meansforzits rotaperipheral surface with a longitudinal clinching groove for the reception of the edge of a sheet metal blank, arranged at an acute angle with such periphery, with another roll provided with a longitudinal groove inits surface, the two rolls being geared together so that in revolution the two groovesshall come in apposition at the finish of their work, and provisions substantially as shown, for rotating said rolls in the manner described and for the purposes set forth.

3. Two parallel rolls of difierent diameters ,geared together, each of which is provided at one end with a mandrel bearing, and a beadin g mandrel seat in its surface, with a removable rotatable grooved beading mandrel and a crank fitted for attachment to either roll and carrying two mandrel bearings coinciding respectively with the mandrel bearings of the opposite ends of the two rolls combined and arranged to operate substantially in the manner described and for the purposes set forth.

4. The described rolls for forming beaded gutter, geared together, one of which carries a grooved rotary beading mandrel mounted in bearings connected with said roll, and the other a longitudinal groove in its surface with which said, mandrel co-operates, and means connected with one of said rolls for revolving the same substantially as and for the purposes set forth.

5. The combination of two parallel rolls for forming sheet metal pipe, one of which has a longitudinal slit in its surface inclined at an acute angle with the periphery of the roll for receiving the edge of the plate which is to be folded, and the other roll has a longitudinal groove or gap in its surface for the reception of the free folded end of the blank incidental to the wrapping of the plate around the forming roll or cylinder, said rolls being geared together by any appropriate means and provided with appliances adapted to drive one of them, substantially as specified.

6. An interconvertible pipe and gutter former consisting of two rolls each grooved as shown, geared together and provided with crank or analogous means for rotating them and bearings, one of which may be in said crank, for carrying a rotary beading mandrel, an interchangeable rotary beading mandrel adapted for rotation simultaneously in the bearings of one and of the groove of the other roll an interchangeable grooved clinching bar adapted to be seated and held'in the groove of either roll, constructed and arranged to operate substantially in the manner described and for the purposes set forth.

In testimonywhereof We have hereto subscribed our names this Sth day of December,

EARL G. WATROUS. HUGH A. RILEY. In presence of DENNIS A. HEALY, FRANK MoEvoY. 

